Steering clutch seal failure... New seals

Hey hef I got a good one here d8h 46a 16xxxish just put new bearings seals pinon and ring gear set preload backlash on bevel gear shaft pressed hubs on with new cat tooling tried to do a nice job. Back it out of shop clutches won't release used cat assembly lube to hold the white piston seals in place. At idle 265psi going down tubes to clutch packs. Last two I did with the grease and they took alil bit but did release. Put 7000 psi on ram witch came out to 37 tons on 55 ton press. And about 1/8 recess from hub face to bevel gear shaft face. Could the grease still be holding the seals? Is there away to breakdown the grease? Do I just like kicking myself? Thanks hef can't wait to here from some of the experienced bucks if this does happen or did I miss something up... Any insight welcome thanks hef

265psi is a bit low. Have you got good pump pressure?
A quick and dirty way to see if you've got a leak is to remove the steering valve and pressurise the tube to the clutch with shop air. It won't be enough to release the clutch but it will let you know if you've got a big leak somewhere.
Had the bevel gear bearings collapsed? If they do, the hub wears into the sealing surface of the bearing carrier.

from what I remember steer pressure was supposed to be around 400psi.I dont think the grease has anything to do with seals holding or not.Sounds like you still have seal problems. How long did it run before you noticed the problem? I have this same job to do to my 977K. Supposedly Cat had issues with bevel gear bearings way back then and had an upgraded bearing to replace them with.

Bearings where worn not blown out. Steering clutches worked before I had it apart..... Bevel gear was chewed up from pervious pinon bearing failure. Just resealed and bearing for good measure. The bearing supports wear not worn in polished them up with lil sandpaper. If the seals sticking is not the problem. All I can figure is they aren't pressed in enough. But I will know shortly

Spec for 46A10,725 to 21,068 is 250 psi minimum with clutches released.

Did verify it was leaking with cover off. TheThe ou seal on the hub that presses on bevel gear shaft is where it shoots out. just got left side apart seals are nice a square no grease left at hub. Pistons still packed with grease don't look like oil made it that far to wash out grease. Not sure what the problem is. I need to pull out some elsese hair I'm getting thin on top.

Those rotating seals aren't meant to be totally oil tight, they will always leak to some degree. If everything looks OK then it probably is OK.

Again, have you got good pump pressure? Also bear in mind the steering hydraulic mechanism is linked to the brake boosters. When you monitor steering pressure is it the same in both the clutch-released position and clutch-released-plus-brake-on position?

Up stream pressure was good 400 ish. At pump. both sides running with hot oil are 300 psi with or without brakes. They don't try to release at all. The old seals had the overlapping joint new ones are abrupt ends. I know I'm splitting hairs but everything looks good.

Well 300psi should be enough to release the clutch. That suggests a mechanical problem. Did you dismantle the clutches? Get something in back-to-front?

Did you change the bearing cage shims so that now the outer seal is to close to the edge of the cage?

So I took it apart inspected everything pistons where still caked in grease. Reinstalled with less grease and works fine. Pressure did go up about 20 psi at idle and full throttle. Doesnt seem like it could cause a problem but perhaps it could. Thanks for help was really scratching my head. The weird part is I just did another d8h in spring the same way. Took lil while but did turn fine. Hopefully no more steering clutches for awhile.

Thanks for the feed back.....was sort of wondering what happened on this one.
So, too much grease is a no! no!.

It appears to be. the hub that presses on was washed clean of grease the piston and part of hub that piston rides in was still packed tight.... Didn't realize how much grease I really used. But live and learn again thanks for the comments usallus if I do something supid someone on here can point it right out lol